Limit the generation of regexp code with large inlined constants.

src/heap.h

Index: src/heap.h
===================================================================
--- src/heap.h	(revision 7820)
+++ src/heap.h	(working copy)
@@ -1214,6 +1214,11 @@
 
   GCTracer* tracer() { return tracer_; }
 
+  double total_regexp_code_generated() { return total_regexp_code_generated_; }
+  void IncreaseTotalRegexpCodeGenerated(int size) {
+    total_regexp_code_generated_ += size;
+  }
+
   // Returns maximum GC pause.
   int get_max_gc_pause() { return max_gc_pause_; }
 
@@ -1497,6 +1502,9 @@
       SharedFunctionInfo* shared,
       Object* prototype);
 
+  // Total RegExp code ever generated
+  double total_regexp_code_generated_;
+
   GCTracer* tracer_;